Question about Bosch 24 in. SHU43 Built-in Dishwasher

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Water pump noise

Was very quite for 18 months. Now loud vibration type noise when water is being pumped out of unit.

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  • noise hater Jun 18, 2008

    Is the food shredder the small gearlike object visible at the bottom of the tub? (Can be seen from inside the tub by removing the small cover). That object is clear of any objects. The sound is more like a loud hum.



    Appreciate your assistance.

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  • Master
  • 868 Answers

There is something that is stuck in the food shredder and causing this sound .

Posted on May 30, 2008

  • Archie Ferrarini
    Archie Ferrarini Jun 20, 2008

    to make sure it's not the motor ,carefully apply pressure at different places on the motor while its on.You have to be extremely careful not to use anything metal or bump into or make contact with>wires,motor windings,switches....etc..Doing this will enable you to instantly know whether your motor is making the humming sound,because the sound will change when you apply pressure.If it's not your motor making the sound please reply to this .Thank You ! Please rate this !

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Posted on Jan 02, 2017

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see this causes and fix it. God bless you
Drain Pump If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.
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Drain Impeller If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.

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Wash Impeller The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.

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